I use ziplock bags to keep the pieces together and everything goes into either a regular or double size ArtBin satchels, depending on the size of the project. I do have two projects in clear 12 gal totes (lots of pieces and pattern pieces). I tried the Iris ones, but the ArtBins are easier to carry around and secures since they have real latches plus a handle. I bought them at JoAnns with either 50% coupons or when they are on sale at 40% off.